Video picture processing method and apparatus

A video picture processing method, comprising:

• obtaining target bitstreams;
• parsing the target bitstreams, to obtain a plurality of sub-pictures and location information and extension information of the plurality of sub-pictures, wherein location information is used to indicate a location of a sub-picture in a to-be-displayed picture, extension information is used to indicate whether picture borders of a sub-picture have been extended, and when the extension information indicates that the picture borders of the sub-picture have been extended, the sub-picture belongs to a first-category sub-picture, and the extension information is further used to indicate extension widths of the picture borders of the sub-picture, or when the extension information indicates that the picture borders of the sub-picture have not been extended, the sub-picture belongs to a second-category sub-picture;
• determining the first-category sub-picture and the second-category sub-picture from the plurality of sub-pictures based on the extension information of the plurality of sub-pictures;
• determining target resolution based on the location information and the extension information of the first-category sub-picture;
• upsampling the first-category sub-picture based on the target resolution, to obtain an upsampled first-category sub-picture, wherein resolution of the upsampled first-category sub-picture is the target resolution;
• splicing the upsampled first-category sub-picture and the second-category sub-picture based on the location information of the plurality of sub-pictures;
• performing weighted processing on values of pixels in an overlapping region between upsampled first-category sub-pictures, to obtain weighted first-category sub-pictures;
• and
• filtering a border region between adjacent second-category sub-pictures and a border region between a weighted first-category sub-picture and a second-category sub-picture, to obtain the to-be-displayed picture, wherein the border region comprises regions of preset sizes on two sides of a boundary between two sub-pictures.

A video picture processing apparatus, comprising:

• a non-transitory memory having processor-executable instructions stored thereon;
• and
• a processor, coupled to the memory, configured to execute the processor-executable instructions to:
• sample an initial picture, to obtain a target picture;
• divide the target picture, to obtain a plurality of sub-pictures, wherein the plurality of sub-pictures comprise a first-category sub-picture and a second-category sub-picture, the first-category sub-picture is obtained by sampling a picture in a first region of the initial picture, the second-category sub-picture is obtained by sampling a picture in a second region of the initial picture, a sampling rate of the picture in the first region of the initial picture is lower than a sampling rate of the picture in the second region of the initial picture, and resolution of the first-category sub-picture is higher than resolution of the second-category sub-picture;
• extend picture borders of the first-category sub-picture, to obtain an extended first-category sub-picture;
• downsample the extended first-category sub-picture, to obtain a downsampled first-category sub-picture, wherein resolution of the downsampled first-category sub-picture is the same as the resolution of the second-category sub-picture;
• encode the second-category sub-picture and the downsampled first-category sub-picture, to obtain bitstreams;
• and
• write location information and extension information of the plurality of sub-pictures into the bitstreams, wherein location information is used to indicate a location of a sub-picture in the target picture, extension information of the first-category sub-picture is used to indicate that the picture borders of the first-category sub-picture have been extended and indicate extension widths of the picture borders of the first-category sub-picture, and extension information of the second-category sub-picture is used to indicate that picture borders of the second-category sub-picture have not been extended.